Team officials gave media outlets a hard-hat tour of the Downtown East site Monday, allowing reporters on the grounds for the first time since construction began in January.

The project is about 23 percent complete at this point, FOX 9 reports, and on track to be open for the start of the 2016 NFL season.

The timeline is tight though. Construction manager Dave Mansell told the Star Tribune there isn't much room for a delay, and a 4-D computer modeling tool that visualizes day-to-day progress helps keep things on schedule.

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About 650 workers are on the site each day, with crews working from early morning until about 1 a.m. every night, WCCO reports.

Currently, a 740,000-pound piece of steel sits on the large patch of dirt that will eventually become a football field, MPR reports. The gargantuan segment is part of the main roof truss, and will be lifted into place next month via a large crane.

That machinery is the largest of the 13 cranes on site, with a couple more scheduled to come to the site over the next six months, the Pioneer Press reports.

For photos and video of the construction as of Monday, make sure to check out each link. The news organizations published plenty of images.

The team has not opted to add bird-safe glass to the towering structure (while increasing spending in other places), despite many calls to do so over concerns about the number of birds who may die crashing into the clear glass.

But in a weekend editorial, the Star Tribune said to keep the deaths in perspective, arguing many other things – pesticides, power lines, motor vehicles and habitat destruction for example – kill so many birds a year, the stadium won't have a significant impact on the population.

Minnesota Vikings season ticket holders recently received an e-mail survey from the team, asking if they would be willing to pay significant sums to secure the best seats in the new downtown stadium. The Star Tribune reports that selling personal seat licenses is one option the team is contemplating to raise cash. The Vikings' share of the construction cost is put at $975 million.